Posts tagged "debugging"

• mini_racer on NixOS: Three Things That Were Wrong

  Jun 25, 2026

  4 min read

  mini_racer 0.21.4 wouldn't build in my nix-shell. The fix turned out to be counterintuitive: removing glibc from buildInputs made stdlib.h work again. Plus a BUNDLE_GEMFILE footgun hiding in plain sight.

  #nixos

  #ruby

  #discourse

  #debugging

• When patchelf stopped working on Claude Code

  May 20, 2026

  11 min read

  A sequel to the NixOS fix. The patchelf-based shell.nix was working, then a Claude Code update made it produce binaries that segfaulted before main(). Three wrong hypotheses, one real cause, two more gotchas hiding inside the fix, and the resolution that finally made it all moot: nix-ld.

  #nixos

  #debugging

  #elf

  #tools